Kingdom [Animalia] Linnaeus, 1758 - animals Subkingdom Protozoa Goldfuss, 1818 see Kingdom Protozoa Goldfuss, 1818 Class Rhizopoda see Phylum Rhizopoda Dujardin, 1835 Order Testacea Genus [Difflugia] Leclerc, 1815 1 Difflugia pyriformis